Heavy Rainfall and Severe Weather Along the East Coast; Unsettled Weather in the Pacific Northwest

A cold front across the East Coast will continue to bring heavy to excessive rainfall, gusty to damaging winds, and a possible tornado through Friday. A series of Pacific storms will continue impacts through the middle of next week across the Pacific Northwest and northern California coast. Gusty winds, low elevation rainfall, and high elevation snow are expected. Read More >

Automatically generated image showing areas of the convective interest parameter.


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Convective Interest

This is a highly experimental index which attempts to show areas where surface based convection is favorable or may initiate within the next hour. The index uses a combination of several fields, (CAPE, CIN, low level lapse rates, moisture convergence, satellite, and most unstable LI) to develop a number between -100 and 100. Negative values are indicative of an environment not supportive of surface based convection. The higher the value, the more favorable the environment is for surface based convection. Values greater than 70 are suggestive that convective initiation will likely occur within the next hour in that region. This index works best in regimes of airmass (or pulse) convection or on days where the cap is the primary inhibiting factor for convection.

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Heavy Rainfall and Severe Weather Along the East Coast; Unsettled Weather in the Pacific Northwest

Convective Parameters - Convective Interest